Stats SA periodically releases all sorts of data that shed light on what is happening in our society - including figures on marriages and divorces, household spending patterns, employment trends, births and what is killing us.
"I have been complaining quiet a lot that people are not using the data. I am sure my successor [Risenga Maluleke] will complain similarly. So there must be somebody who helps others to use the data," he said in an interview with Sowetan yesterday.
He said he hoped Stats SA's statistics would be incorporated into the academic curriculum to influence public policy choices.
Lehohla reckoned that bodies such as municipalities were not using the data that statisticians produced to plan the delivery of services, and tend to use it more to monitor developmental trends.
Sometimes public spending is not informed by evidence. For example, The Times recently reported that some newly-built schools in the Eastern Cape would shut down because they had very few pupils.
Politicians have not always been happy when Lehohla used figures to make public commentary about policy failures.
"As a statistician-general you can't go into public policy to shed light. But now I can go and advise, and say 'prescribe this policy because data suggests that it can be successful'."